Mining machine



2 Sheets-Sheet c.. F. osGooD MINI-NG MACHINE `'Filed Aug. 31. 1925 AMarch 1.3, 1928.

ll. if.

,E Q22 om 'March 13,- 1928. f

' C. F. OSGOOD MINING MACHINE v Filed Aug. 51, 1925 2 Sheets-Sheet 2 Patented 4Mar 13, 1928.

emrah sireTESl i 1,662,79cL PATENT camice.

MINING;k MACHINE.

Application` ledi August: 31, 1925:` Serialv No.1 53,723..

'Ilhis .invention relates? to. mining machines and moresp articularly to `miningzmachines of the :continuous cutter type adaptedtobe: fed laterally: relative to thetacef of'A the coalto 5l cut asuhstantially horizontal kei-fi thereunder;` v n Anf object.. ot this invention is to provide. ani improvedmining; machine of the con-H tinuous cutter,AIV room and pillar type having,

wwimprovedi feeding meansV whereby-.the ma chinefmay; be. positioned relative to ,the` face1 ofthe coal, moved `about the mine, sumped into thecoal, andl fed: laterally during.. its transverse cuttingoperation' in an improved las andlmore effective?manner.-L Another object. of my inventionis-the provision'of. improved.

feeding.. mechanism` whereby the' machine.`r

may bepositioned,sumped; anflfed laterally relative tothe coalI at dii'erent speeds and! Zfhniore pa rticulmfl'vl it is an. object of the invention tofprovide improvedfeedingzinechaf nism. ton' suelta machine wherein. tlie feed operating. member may be driven/cto. draw; in.-the. flexible feeding membervat three pre.-

detenninedspeeds, namelygfa` fastl positioning; speed, a slow cutting speed, and an. in terme-.diete sumping;speed.y A further object ot. the invention iS- to provide y anl improved.. mining machine. having-an improved ar :io rangement o'fthe mechanisint'or' actuating;

the: cutter chain .andi the .feed operatingy members wherein, dueto the location of. the same great compact-ness' may be. secured.` OtherY objectsof this invention. will, how.-

35 ever,.subsequentlyfappean In a. preferred embodiment'the. invention. may.- be lembodied ina machinecomprising` al mainiftramef slidable. ont its bottom: or` on ay parallel opposite surface on.- the mine' bote.

io tomandxhaving carriedxtliereby. aprojecting cutterchainrcarrying cuttenbar'. The ma;

chine ma?.y bei propelled; bethA during cuttings and at other timesfpneferably-J hva flexible*V y gearing: units@ are preferably` driven.v from.l 'lof the motor. pinion through ,transmission means'includinga plurality of Worms rotatablcy on; parallel.-I longitudinallyi extending), axes and@ cooperating Worm gears, rotation ofthwvorm's beingunder the; control. of' 7m.

manually 1 operable friction clutchi andbrake devices.-

In: the-accompanying drawings areshovvn. for. purposes of.. illustrationA one. forma and. aI modificationwhichmy inventionmay as= 8Bn sume.l in: practice..

In.v these drawing/sg-.-

Fig.. lf is a planivlevvl off amining. machine constructedI iin accordance Withan embodiment. of. my invention, theximproved transel View; taken substantially on. line :lk-4 of Figi., 95.

1,@ parts ofv the mechanism being shownfinv elevation; y

Fig.. 5f is afdetailtransverse. vertical.4 sec-v tional-view taken substantially onf line. 5 5

Fig; 6fisf ak slightly. modified form/ofthe portionof thetransmission meansshown in` Figs-.- '11 andr.

`Referring; tothe. drawings, l generally' represents afy mining machinefof' the .continus 105 ons.' cutter roomfand' pillar type having-,a` frame 2-f`slidahle1on its bottom: 3, ort,.at/ willy oml itsupper surface. 39,. onf thefm'ine. bottomandi carryingya forwardly -project-ingil rigidil cutter ban-4. about theiouter edges of which* 110 a. cutter bit carrying cutter chain 5'is adapted to be ciiculated in a usual manner. The frame 2 consists o'f a bed section G, a motor section `7, and a 'feed section 8, the latter also housing a portion of the transmission means lor actuating the cutter chain. As

illustrated, the sections 7 and 8 are carriedl upon the bed section G, the motor section 7 overlying the rear end of the cutter barl at the lorivardend of the machine traine. The sections 7 and 8 are rigidly secured to the bed section in any approved manner. DisposedV Within the motor section 7 is a motor 9 which is herein preferably o'tthe reversible electric type having a longitudinally extending horizontalarmature sliatt 1Q.

Referring specifically to the transmission means flor actuating the cuttercliain 5 it will herein be observed that secured as by `a-lrey and screw connection 11 `to the rear end of the vari'nz'eture shaft 10 is a spur motor pinion 12 having a reduced hub portionV 13 journaled Within suitableV ball bearings V14 carried bya bracket 15 'forming a portion of the rearinotor head. As illustrated, the

motor pinion 12 meshes with a spur gear 16 splined as at 17 to a horizontal longitudinally extending transmission shalt 18 disposed belenv and extending rearwardly avv-ay 'l'roin the armature shalt 10.I The shaft'lS is journaled in ballbearings 19, 20, and 21 suitably carried by the trame section 8;

Moreover, splined as at 22 to the shaft 18 and disposed between the` bearings 19`and 2O is a bevel pinion 23 whichr meshes with a largebevel gear 24 suitably journaled on a vertical axis Within the bedsection 6. Herein the bevel gear 24 is'adapted Ito be con nected in operative driving relation with a vertically disposed Vshalt 25 by means of a reciprocable clutch member2`6 splined as at` 27 to the upper end of the shaft 25. Suitably secured to lthe loiver end or the shaft 25 is a spur pinion 28 ivliich nieshes Withalarge spur gear 29 secured in a suitable manner" to a usual cutter chain'driving sprocket 30 with which the cutter chain 5 cooperates.

It Will herein be noted that the clutch member 26 is adapted to be actuated by means el? ka shipper n ieinber 31 (see Figs. 1 and-5) pivoted as at 32 on a portion of the frame section 8,. As slioivn, the outer endet the shipper member 31 is connected byV a linlr member 33t() `an eccentric dislr 34 suitably secured to a longitudinally disposed actuating shaft suitably journaled Within the machine `frame. i The rear end ol' the shaft 35 is provided `with a suitable operating member 35. lt Will thus be evident that by suitable manipulation of the member 36 the eccentric dislr 34 may berotated, causing the shipper lever 31 to be swung about its pivotY and the clutch meinber26 reciprocated longitudinally of the shalt 25, thus permitting the cutter chain sprocket to be actuated or and 38,; respectively.

toiteniain idle at the will of the operator While the motor 9 continuously operates.

In specilically describing the improved feed transmission mechanism it will Vherein be noted that meshing with the spur gear 16 at opposite sides `thereol1 are spur gears 37 These spurV gears 37 and 38 are suitably secured to longitudinally extending horizontal drive shafts 39 and 40,

respectively, disposed parallel vvith and at opposite sides olf the shalt 18 and these shafts are suitably journaled Witliinbearings 41, 42 i and 43 carried by the machine traine. v,Fur-Y 1 therniore, it will be noted that disposed coi 39 and 40, respectively, are `Worms 44, 45 and axially with and jouriialed on the shafts 1S,

AThese Worms are ofthe non-sell-loclriiig type. The rotation of these Worms is adapt-V cd to be controlled by combined clutch 'andf brake devices to be "hereinafter described.

As shown, the central Worm`44 is meshed` with a 'ivoriii gear 47 disposedon aliorizon-V tal transverse. axis and spliiied as at l48 to the adjacent hubs of coaxially arranged bevel gears 49 and 5U, the latter gears 'inesli' ing `with beveled planetary pinions 51 'and 52, respectively. As illustrated, the planetary gears 51 and 52 are journaled upon ra dially disposed shal'ts 5,3 supported by suitl able carrier members 54 splined as at 55 to coaxially arranged transmission sliai'ts and 57, respectively, disposed coaxially with the bevel gears 49 and 50. Arranged at each side of and supporting the hub el; the `Worin gear 47 are suitable `ball `bearings 58 Vvthus` forming a stable support for the gear and shafts. Furthermore, ,the inner adjacent ends of the shafts '56 and 57 are journaled Within a bearing sleeve 59` disposed Within the'hubs 'of the bevel gears 49 and 50 While theouter ends of these shafts `are journaled in ball bearings 62 suitably carried by the machine 'frame 2. Meshiiig With the Worms 45 and 46, respectively, are Worm vgears 63 and tfl'splined as at 65-to-the hubs of bevel gears `66 and 67, respectively, the latter being arranged coaxially witlitlie bevel gears 49 and 50. The gears 66 and"67 also mesh with the planetary pinions 51 and52, respectively. Splined as at 68 to the outer ends of the sliaftse and 57, respectively, are

suitable guidesheaves 72a and these sheaves areadapted to guide the cables 71- and 72 in a suitable manner during the various Voperations of the machine.

` The combined clutch and brake devices for clutch housing member 7.9 splined asat toy controlling vrotationof. the Wormss 44, `45.v and: 46 are generally designated73,.74iandi75 and` as they areof substantially.thezsame. struc.-

turethe descriptionof. one Willsuiiice; for all.. As shown,I splined to the rearend ofthe shaft k18 is. a-clutchmember 76.carrying;a se

ries of clutch disks 77 Whichare. interleaved withl a seriesof clutch disks 78.carried-,by a

. 86to the machinefframe 2. Intel-posedv between the housing 85 andthe housing 7 9 is a lill.'

dii

clutch applying member 87 havingA projecting lingers 88 and 89 engagingcertain of` the series of .clutch` disks 83, 84 andl .77, 78, respectively. Cooperating Withthe clutchl applying member 87 is a recipfrocable shipper 90 adapted tol beactuated byI means of a handle 91 suitably carried at the rear. end of the machine frame. From the-foregoing it will be evident that Whenrthe clutches 77, 78 of the devices7 3,74 andf7-5 are'applied, the worms 44, 45, and 46. maybe driven byV the shafts 18, 39 and 40, respectively. Furthermore, it Will be evidentthat when the clutches 77, 78 are released and the4 clutches 83, 84 are applied, rotation. of thefworms 44, 45 and 46 is prevented,thecluteh disks. connecting the Worm sleeves81 Wit-bythe stationary housing members 85.

In the modified form; of `structure show-n in Fig. 6 in which corresponding parts beary similar reference characters,.but.with fa. appended, it will be noted that improvedmeans are provided for driving the Central worm 44 at different predetermined speeds in. the' same direction and suchmea-ns comprises a spur pinion 9,2 disposed coaxially with the spur gear 37a and suitably secured. to the i shaft 39Zt and thispinion 92 meshes With` a spur gear. 93 loosely journaled on. the shaft 18a. Furthermore, thegear l6'is also-loose ly journaled onthe shaftY 18a instead of being splined theretoj as inthe. form of my 2. vGrear 23, not shown, is rotatable With? gear 1637'. Interposed betweent-he gears 16a a-ndy93 and splined as at 94 to theshaft 18fL is a jaw clutch member 95 having oppositely disposed "4? clutch teeth 96 and 97 adapted to engage clutch teeth 98 and 99 formed'onthe gears 16 and 93, respectively A suit-able shipper mechanism 100 having any conveniently located and actuated control member, is provided for actuating the clutch member 95. From the foregoing it Will be evident that when the gear 16a is connectedby the. .clutch 95 to the transmission shaft 18, theworm 44,

when the friction clutch 77 78 is connected,

may be driven at a fast speed,` While if the u v m gear 93 isconnectedt-atheftransmission shaft.. f

18a and the gear .16a disconnected,` the: worm., 44 may be driventhronghthe gears'12, 16.,

in the same'direction.

In. the operation of therstfrom; of my '3711,92 and 93 at a relatively. slower speed" improved mining machine; it will` beV noted@V th at. when' the lmachine is ,unloaded from-,its

transport truck one. or. theothen ofthe cablesf f 71, 72 may be extended. to a: p.oint..adjacentf,. f the right hand `rib and; anchored imposition..

as by a suitable'roof jack or take up. device;`

During this positioning operationthe. maXi= mum machine. movinggspeedmay advantages ously be used4 and accordingly by connectingv both the Worm 44 and Whichever onefof thei worms 45, 46 is vto be used: to.i their` shafts `through the manipulation of the clutchi` 73;`

and the clutch 7.4 or 7 5a maximum vv-indingi` speed may be obtained, since, for'example5f the gears' 50 and 67 Will-simultaneously notate `in the saine direction.andsothe:speedio-l rotation imparted .to they shaft 57i Will be` the sum of the effects of rotation off they gears 5() and 67. Vhen. the.- machine: has

is to be begun, the controlling cable 72; is

lbeen moved to the position in Which-.sumping anchored in the desired position at thefrighta hand rib while they feed cable-71i is extended from the druml 69 around the front guide.- sheave 7-1n and laterally'totheleft hand rib ofthe coal adjacent the facein'a WellI known manner. The clutch 77 and 78'of the'device 73 con-trolling rotation ofy the Worm 44;y is

then applied causinglthe' latter to. drivev thel 67 and .the parts .are proportioned andI de.. signed to provide the. deslredsumpmg. speed; Y

Then cutting across the faceistocommence, the clutchdisks 77, 78of the device 74 arel loaded, the clutch disks 83 and 84of thede.-v vice 73 loaded,.and the disks 83 and 84of'the device 7 5 partially loaded. Asaiesultthe. planet gears 51 are driven by thegear 66 about the reactiongear 49 which is then sta-- tionary and by reason .ofthe slower speedoff rotation ofthe gear y66 secured by the. reduc-uV tion between.the'elements 16, and 37 .audby,- suitable design of the teeth of theworm 45,.,

the cable 71 is caused to be, ivo-undV in. at a cutting speed. The cable 72is permitted toV pay out! against the resistance opymsedato` turning of the Worm 46vby. the loading of the clutch` disks 83 and 84whi'ch servei toconnect it in adjustable slipping relation to a stationary part of. the machine frame. From what has been said the method of angling the machine will be clear to any one skilled in the art and also the manner in which any 92 andV Gear 93 which transmission is employed when a sumping speed is desired, a much higher speed may be secured for machine moving, since when the worm 44 is driven directly from the gear 16 `the sum of the speeds transmitted to the bevel pin` ions will naturally be llargely augmented.

Further descriptionof the inode of operation'ofthis form of the invention is believed unnecessary as ingeneral with the exception of the provision of this `additional higher machine moving speed the arrangement and operation correspond closely to that ofthe first species.

As a result of this invention it will be noted that `a mining machine 1s .provided having improved feedingimechanism whereby the machinemay be moved about the mine atone speed, sumped into the coal at a slower speed, and fed transversely relative to the face at a slow or cutting speed. It will be observed further in view of the possible-modifications of the gearing thatparticularly inthesecond form or modification described an extremely desirable conibination of speeds can be obtained, for the cut-ting speed may be slow, the suinping Speed somewhat higher, perhaps two or three times the cutting speed, and the machine moving speed inay be made as large or as small as is desired.

-lVhile I have in this application specifi cally described two forms which my invention may assume in practice, it will be undei-stood that these forms of the same are shown for purposes of illustration and that the inventionV may be modified and `embodied in various other forms without departing from its spirit or the scope of the appended claims. e Y What I claim as new and desire to secure by Letters Patent is:

LInamining machine, a motor, and feeding mechanism operated by said motor including a flexible feeding portion, a rotatable feed operating and controlling member cooperating directly therewith, and operat ing and controlling means for said meniber including coaxial elements rotatingon transversely extending horizontal planet means coopei'ating with said `elements and rotatable thereby, worms operatively Connected to said coaxial elements, and

. transversely axes, i

2. In a mining machine, a motor, and feed- .ing mechanism operated by said motor including a flexible feeding portion, a rotatable feed ope ating and controlling meinbei cooperating directly therewith, and operating and controlling means for said member` including coaxial elements rotating on` transversely extending horizontal axes, planet means cooperating with said (elements, horizontal worms operatively `connected to said coaxial elements, and means for effecting rotation of said member on orbital movement of saidplanet means.

feedingmechanism operatedjby said motor` able feed operating and controlling niember cooperating directly theiewith, and Ioperating and controlling means forsaid inember including coaxial elements rotating on transversely extending `horizontal axes, planet means cooperating with said elements, worms rotating on axesin longitudinally extending vertical planes operatively connected to said coaxial `elementsrespectively, and means for effecting rotation of said member on orbital movement. of said planetmeans.

4. In a `mining machine, a motoi, and feeding mechanism operated by saidmotor including a flexible feeding portion, a rotatable feed operating and controlling meinbei' cooperating directly therewith, and `op-` erating and controlling means for, said member including coaxial-elements rotating on transversely extending horizontal axes, planet means cooperating with said elements, worms rotating on axes lying in the same transversely extending plane operatively connected to said coaxial elements respectively, andgmeans for effecting rotation of said member on orbital movement of said planet means. y i

5. In a mining machine, a motor, and feeding mechanism operated by said motor including a flexible feeding portion, a rotatable feed operating and controlling member cooperating directly therewith, and operating and controlling means for said member including coaxial elements'rotating on extending horizontal axes, planet means cooperatin'gr with said elements, horizontal worms rotating on axes lying in the same transversely extending plane operatively connected to said coaxial elements, and means for effecting rotation of said member on orbital movement of said planet means. v

6. In a miningjmachine, a motor, and feeding mechanism operated by said motor including a flexible feeding portion, a rotatable feed operating and controlling member cooperating directly therewith, and operating and controlling means for said mem- Se 3. In a mining.inachine,fa motor, and

Uil

ber including coaxial elements rrotating lon transversely extending v'horizontal axes, planet means cooperating with ysaid `lelements, worms operatively connected to said coaxial elements, means for rotating either or both of said worms, and means for veffecting rotation of said member ion iorbital movement of said lplanet means.

7. In a. mining machine, a motor, and feeding mechanism operated by lsaid motor including a'flexible feeding portion, a rotat able feed operating and controllingmember cooperating directly therewith, and operating and controlling means for said fmember including coaxial elements rotating on` transversely extending 'horizontal axes, planet means cooperating with said-elements, horizontal worms operatively ,connected `to said coaxial elements, means for rotating veither or both of said worms, and 'means for effecting rotation of said .member on Aorbita-1 movement of ksaid planetmeans.

8. In a mining machine, a motor, and feeding mechanism'operated by said motor including a flexible feeding portion, a rotatable 'feed operating andeontrollingvmember cooperating direct-ly therewith, andoperating andcontrolling means yforsaid member including coaxial elements rotating on transversely extending horizontal axes, planet means cooperating with `said-elements, worms rotating on axes in 'longitudinally extending vertical planes operatively:connected to said coaxial elements, `means for 'rotating either or both of saidV wormsfand means for effecting rotation of-saidmember on orbital movement of said planet means.

9. In a mining machine, a motor, and

feeding mechanism operated by saidvmotor including a flexible. feeding portion, a -ro- 't-atable feed operating andv controlling imember cooperating directly therewith, ,andoperati ng and controlling means for saidmember including coaxial yelements .rotating on transversely extending horizontal axes, planet means cooperating Lwith said elements, woriQ's operatively connected to said coaxial elements,`v means foi-.rotating either of said worms while the other is stationary, and means for effecting Irotation of said member on orbital movement of:said planet means. f

10. In a miningl machine, a. motor, and feeding mechanism operated by said` motor including a flexible feeding portion, `a rotatable feed operating and controlling member cooperating directly therewith, and operating and controlling means for said-member including coaxial elements rotating con transversely extending horizontal axes, planet means cooperating with said elements, horizontal worms operatively connected to said :coaxial elements, means forrotating either of said worms while' the other is stationary, and means for effecting rotation ofl said member on orbital movement of said y worms rotating on axes in longitudinallyextending vertical planes operatively connected to said coaxial elements, means for r0- tating either of said worms while theA other is stationary, andV means for effecting vrotation of said member on, orbital movementv of said planet means. l

12. In a mining'machine, a motor, and feeding mechanismy operated by saidmotor including a flexible feeding portioma rotatablevfeed operating and controlling ,member cooperating directly therewitlnand operating and controlling. means for said member including coaxialfelements rotatingon transversely extending horizontal axes,

Ypla-net means cooperating withv said elements, worms operatively connected to said coaxial elements, means for rotating either of said worms while the other is stationary, and means for effecting rotation of `said member on orbital movement of said planet means..

13. In ajmining machine, a motor, and

lfeeding mechanism operated by Vsaid vmotor including a exible feeding portion a rotatable feed operating and controlling kmember cooperating directly-therewith, audioperating and controlling means; for said -mem- -ber including coaxial elements rotating on transversely extending horizontal axes, planet means cooperating with said elements, horizontal worms `operatively connectedto said coaxial elements, means for rotating either of said worms while `the other isstationary,` and meansfor effecting rotation of said member on orbital movement of said planet means.

14. In a mining machine, a motor, and feeding mechanism operated by said motor including a flexiblefeeding portion, va rotatable` feed operating and controlling membercooperating directly therewith, and operating `and controlling means forfsaidfmember including coaxial elements rotating -on transversely extending horizontal planet means cooperating with said elements, worms `rotating `on axes in longitudinally extending vertical planes operatively connected to said coaxial elements, means for rotating either of said worms -while the yother is stationary, and means for effecting rotation of said member on orbitalmovement ofvsaid planet means. v if 15. In ai mining machine, a motor,

axes,

feeding mechanism o erated by said motor including a flexible ceding portion, a rotatable feed operating and controlling member cooperating directly therewith, and operating and controlling means for said member including like coaxial elements rotating on transversely extending horizontal axes, planet means cooperating with said elements and rotatable thereby, worms operatively connected to said coaxial elements, and means for effecting rotation of said member on orbital movement of said planet means.` p

16. Ina mining machine, a motor, and feedingimechanism operated by said motor including a flexible feeding portion, a rotatable feed operating and controlling member cooperating directly therewith, and operating and` controlling means for said member including like coaxial elements rotating on transversely extending horizontal axes, planet means cooperating with said elements, horizontal worms operatively connected to said coaxial elements, and means for effecting rotation of said member on orbital movement of said planet means.

17. In a mining machine, a motor, and feeding mechanism operated by said motor including a flexible feeding portion, a rotatable feed operating and controlling member cooperating directly therewith, and operating and controlling means for said member including like coaxial elements rotatingV on extending horizontal axes, planet means cooperating with said ele-' ments, worms rotating on axes in longitudinally extending vertical planes operatively connected to said coaxial elements respectively, and means for effecting rotation of said member on orbital movement of said planet means. i

18. In a mining machine, a motor, and feeding mechanism operated by said motor 'including a flexible feeding portion, :i rotatable feed operating and controlling member cooperating directly therewith, and operating-and controlling means for said member including like coaxial elements rotating on transversely extending horizontal axes, planet means cooperating with said elements, worms rotating on axes lying in thevsame transversely extending yplane operatively connected to said coaxial elements respectively, and means for effecting rotation of saidmember on orbital movement of said planet means.

' 19.]In a mining machine, a motor, and feeding mechanism operated by said motor including a flexible feeding portion, a rotatable feed operating and controlling member cooperating directly therewith, and operating and controlling means for said member' including like coaxial elements rotating on transversely extending horizontal axes,

planet means cooperating with said elements, horizontal worms rotating on axes lying in the same `transversely extending plane operatively connected to said coaxial elements, and means for effecting rotation of said member on orbital movement of said plane-t means. Y

20. In a mining machine, a motor, and

feeding mechanism operated bysaid motor e including aflexible feeding portion, a rotatable feed operating and controlling member cooperating directly therewith, and operating and controlling means for said member including like coaxial elements rotating `planet means cooperating with said elements, horizontal worms operatively connected to said coaxial elements, means for rotating either or both of said worms, and means for effecting rotation of said meniber on orbital movement of said planet 22. In a mining machine, a mtor, and feeding mechanisml operated by said motor including a flexible feeding-portion, a rotatable feed operating and controlling member cooperatingdirectly therewith, and operating and controlling means for said member including like coaxial elements rotating on transversely extending horizontal axes, planet means coopera-ting with said elements, wormsrotating on axes in longitudinally extendingvertical planes operatively connected to said coaxial elements, ridbans for ro-` tating either or both of said worms, and means for effecting rotation of said member on orbital movement of said planet means.

23; In a mining machine, a motor, and feeding mechanism operated by said motor including a flexible feeding portion, a rotatable feed operating and controlling member cooperatingdirectly therewith, 4and operating and controlling means for said member including like coaxial elements rotating on transversely extending horizontal p axes, planet means cooperating with said ele- Vments, worms operatively connected to said coaxial elements,v means for rotating either `of said worms while the otheris stationary, and vmeans for effecting rotation of said member on orbital movement of saidV planet i means.

isc

men'ts, worms rotating sonraxes in longitudi- `-nally extending Vertical planes -operatively "connected to saidcoaxial elements, means 24. :Infafmining machine, fa f'motor, :and

,eeding fimec'hanism I operated .fby rsaid LfIn'otor including a flexible feeding portion, :a rotatable'feed:ope-ratingian'd controlling .incinfbereooperating directly' therewith anch opernting and controllin'ginleans @for ysaid mem- --ber .including like coaxialaelcments rotating -on transversely extending yhorlzontal axes, planet.;.means Acooperating with said elements, lhorizontal Worms operatively lcon- =nected toy said v coaxial elements, means 'for Vrotating either of said worms While the other is stationary, ,and imeansiforfeffecting rotaftionsofsaid member :on orbital` movement yr of stud 'fplanetI means.

25. In a mining machine, a motor,fand

planet lmeans cooperating with said Aelejfor rotatingeither of said worms While the iother is stationary, fand rmeans for effecting "130 rotation of said member ion l'orbital movement of said l,planet means.

26. In .la j'mining machine, a motor, Aand -ffeeding `mechanismoperated by said motor including a -flexible feeding portion, a rov35 -`'ber cooperating directly therewith, and opt-atiible feed operating-fand eontrollingfmem- 'erating and controlling `=means r'for `l Said me'niber including like `coaxial l elements rotating on vvtransversely extending #horizontal axes, planet 'means cooperating with vsaid elements, lworms operatively connected to said Acoaxial elements, means for rotating either of said Worms continuously 'while the other is stationary, and means lior effecting rotation of said member onvorbital movement of. said planet lmeans;

27. In a mining machine, a motor, and feeding mechanism Aoperated -by said motor t'including -a' flexible .feeding portion, a `rotatable lfeed operating and controllingl kmember cooperating directly therewith, andy operating and controlling means for said Imember `including like coaxial elements rotating on *transversely i extending horizontal axes, planet means cooperating -With said elements, horizontal Worms operatively connected to Said eoaxiallelen'ients, means lfor rotatlng either'of said worms continuously lwhile theother is stationary, andmeans :'t'or effecting rotation ofysaid memberon'orbital movement'o'f said planet means I28 tIn agmining machine, a motor, :and lfeeding.; mechanism operated by said motor including a `flexible feeding portion, a. `rutatable feed f operating and controllingmember cooperating directlyftheiewith,sand 4operatingfan'd controlling means orsai'dtmem- .ber rincluding like coaxial elements yrotating on transversely extending horizontal axes, planet means cooperating with .said elements, lWorn'rs lrotatingon axes 4in longitudinally extending .vertical planes operatively connected to said coaxial elements, means -i'or rotating either of said worms continuously gwhile the other is stationary, -and :means yfor effecting rotation oi' saidanember -on Aorbital movementfof said planet means.l

.29. yIn a :mining smachine, 'feeding-mechanism .including a plurality 1of )pairs of @coaxialy elements 'rotating on horizontal transversely-extending axes, :planet means'y coo lerating .with the'ielements :of ypeach pair, means for rotating said coaxial elementsin- -cluding worms rotating on axes arranged 'in longitudinally extending verticalplanesmne of said worms rdriving an element :of feach pair, and separate. feed operatingimembers cach adapted to cooperate directlynwith flexible 4feeding means vand' each driven wand controlleil'through one of saidfpairs `.of coaxial elements. v

30, Inca :mininginachine,. feeding mechanismuinclu-ding a plurality of pairsfof co- :axial elements rotating on fhorizontal-Ltrans- ,verselycxt-ending axes, planebmeans coo yerating i7with the Velements io'i :each pair, :means :for r rotating said rcoaxial elements :including 1Worms rotating on horizontal .'a-xes, one Aot said v'worms'driving lan -element :of each pair, and separate lfcedi operating-members ifeachy adaptedfto cooperate directly *with .flexible feeding means f and each driven fand controlled throngh'fone fot lsaidV pairs fof; eo-

axial elements. Y

3.1. VIn a mining n1achine,-fee`di1igrmechanislnlincluding a `plurality -ioit pairs of y:coaxial elements rotating non :horizontal ftrans# versely extel-iding axes, planet means cooperating `with :the elements 7fof @each pair, fmeansrzfor:rotating said coaxial'elements -inrcluding worms :rotating on :axes arranged ,in longitudinally :extending vertical planes lying .in the -same -transverseplane, one of said` ivormsfdrivingf anelement 1 of ,each -pair, aml'separate feed operating :members each adapted tto cooperate directly IWith.flexible 'feedingi'meansand eachdriven and conitrolled lthrough one lof said -pai rs of coaxial elements.

,32. rIn a mining lmachine',-i`eecling mechafnism including a plurality oi pairs of coaxial elelnents irotatingon horizontal transvieri -i'ersely extending axes, planetmeans coop- `erating with `fthe `elements fof cach pair,

'means for .rotating said coaxial elements including Worms :rotating :on horizontal. axes flying vin ithe Isame Ytransverse plane, one zot 'said'worms driving an element of `each Jpair, `separate feed :operating members `each fadapted ,to ,cooperate directly with iexible isop i axial elements rotating on horizontal transfeeding means and each driven and controlled through one of said pairs of coaxial i elements,and means foreffecting rotation of said members on orbital movement of said planet means. i i

33. In a mining machine, feeding mechanisms including a plurality ofpairs of coaxial elements rotating on horizontal. transversely extending axes, planet means cooperating'ivith the elements of each pair, and means for rotating said coaxial elements including' three worms rotating on axes arranged inlongitudinally extending vertical planes, the central Worm driving an el-cment of each pair, and means for effectingrotation of said Worms including means for rotating said last mentioned ivorm at different speeds.

34. In a mining machine, feeding mechanisms including a plurality of pairs of coerating `with the elements of each pair, and

means for rotating said coaxial elements including three Worms rotating on axes ari ranged in longitudinally extendingT vertical planes, the cential Worm driving an element of each pair, and means for effecting rota tion of said Worms including means for rotating said last mentioned Worin at different speeds or allowing it to remain stationary.

L '86. VIn a mining machine, feeding mechanisni including a plurality of Lpairs of coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements ofeacli pair, and means for rotating said coaxial elements including tlireeworms rotating'on horizontal axes, the central Worm driving,an'element` of each pair, 'and'means for effecting rotation of said worms including means for rotating said last mentioned Worm at different speeds or allowing it to remain stationary.

37. In a miningmachine, feeding mechanism including a. plurality ofpairs of coaxial elements rotating on horizontal transversely extending axes,planet means cooperating with the elements of each pair, `and means for rotating said coaxialelemcnts iny cluding three Worms rotating on axes ar-` ranged in longitudinally extending vertical planes, the central Worm driving an element of each pair, and' means for effecting rotation of said Worms ,including means -for rotating said last mentioned worm at different speeds and Asaid other Worinsuat :likefspeeds in the same direction;

38. In a mining machine, feedingmechavnism including a plurality of pairs of coaxial elements rotating on horizontal `transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial element-sincluding three worms rotating on horizontal axes, the central Worin driving an element of each pair, and means for effecting rotation of said worms including means for ro tating saidlast mentioned worm at different speeds and said other worms at like ,speeds` in the same direction. i i

39. In a mining machine, feeding mechanism including a plurality of pairs of coaxial elements rotating on horizontaltrans-` versely extending axes, planet meanscoop erating with the elementsof each pair, and means for rotating saidicoaxial elements ineludingthree Worms rotating on axes arranged in longitudinally extending vertical planes, the centralvvorm driving an element ofeach pair, and means `for effecting rotation of said Worms including mea-nsvforrotatingsaid last nientionedivorm at different speeds or allowing it to remain stationary and said other Worms at like speeds in the same direction. y

40. In a miningmachine, feeding mechanism including a plurality f pairs of co-` axial elements rotating on horizontal transversely extending axes,fplanet means cooperating with the elements ofeach pair, and

means'for rotating said` coaxial elementsincluding three Worms rotating on horizontal axes, the central Worm driving an element of each pair, and means for effecting rotation of said worms including means for rotating said last mentioned'worm at different speeds or allowing it to remain stationary and said other Worms at like speeds in the same direc-` tion.

nism including a plurality of'pairs` offlike coaxial elements rotating on horizontal `transversely extending axes, planet means `cooperating with the elements of each pair,

means forrotating said coaxial elements including a. pluralityof Worms one of which drives an element of each pair, and separate i feed operating memherseach adapted to co-` operate directly ivith flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

42. In a `mining machine, feedingmecha nism including a plurality of pairs ofV like coaxial elements rotating on horizontal transversely extending axes, :planet means cooperating with theelements of eachupair, means for rotating saidcoaxial elements including a plurality of worms rotating `on parallel axes, one of which, drives anelei 41. In a mining machine, feeding mecha- 43. In a mining machine, feeding mechanism including a plurality of pairs of like' coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair,

means for rotating said coaxial elements including a plurality of `Worms rotating on horizontal axes,'one of Which drives an element of each pair, and separate feed operating members each adapted to cooperate directly with flexible feeding means andV cach driven and controlled through one of said pairs of coaxial elements. y

44. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including' a plurality of Worms rotating on axes lying in parallel planes extending longitudinally of the machine, one of which drives an element of each pair, and separate feed operating members each adapted to cooperate directly With flexible feeding means and each driven and controlled through one of said pairs of coaxial elements. i

45. In a mining machine, feeding mecha- .nism including a plurality of pairs of like coaxial elements rotating on horizontal t ansversely extending axes, planet means cooperating with the elements of each pair,y means for rotating said coaxial elements including a plurality of Worms rotating on axes lying in the same transverse plane, one of which drives an element of each pair, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

46. In a mining machine, feeding mechap nism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating With the elements of each pair, means for rotating said coaxial elements including three Worms, the central Worin driving an element of each pair, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

47. Iii a mining machine, feeding mechanismV including a plurality of pairs of like coaxial elements rotating on horizontal transverselyextending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including three worms rotating on parallel axes, the central Worm driving an element of each pair, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

48. In a mining machine, feeding mechanism including a plurality of pairs 0f like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of Aeach pair, means for rotating said coaxial elements including three Worms rotating on horizontal axes, the central Worin driving an 'element of each pair, and separate feed operating members each adapted to lcooperate directly withv flexible feeding means and each driven and controlled through one of said pairs of coaxial elements. D

49. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on -horizontal transversely extending axes, planet means cooperating with the elements of each'pair, means for rotating said coaxial elements Aincluding three worms rotating on axes lying in parallel planes extending longitudinally of the machine, the central Worm driving an element of each pair, and separate feed operating' inembers each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

50. In a mining machine, feeding mechanism including a plurality yof pairs of like coaxial elements rotating on horizontal transversely extending axes, planet Vmeans cooperating With the elements of each pair, means for rotating said coaxial elements including three worms rotating on axes lying in the same transverseplane, the central worm driving an element of each pair, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

5l. In a mining machine, feeding mechanism including a plurality of pairsv of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including a plurality of Worms one of which drives an element of each pair, and means to effect rotation of said worms including means for rotating each of said Worms at will or holding it against rotation, and separate feed operating members each adapted to cooperate directly with 4flexible feeding means and eachl driven and controlled through one of said pairs of coaxial elements.

52. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating ivithlthe elements of each pair, means for rotating said coaxial elements including aplurality of Worms rotating on parallel axes, one of which drives an element of each pair, and. means to effect rotation of said Worms including means for roy tating each of said worms at will or holding it against rotation, and separate feed operatingniembeis each adapted to cooperate directly.Withflexible feeding means and each driven and controlled vthrough one of Said pairs of `coaxial elements.

53. In a mining machine, feeding mecha- Vnism including a plurality of pairs of like coaxial elements rotating on horizontal i transversely extendingI axes, planetmeans Idriven and controlled through one of said y pairs of coaxial elements.

54. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on` horizontal transversely extending axes, planet means AV:its

cooperating with `the elements of each pair,

means forirotating said coaxial elements including a plurality of Worms rotating on Vaxes lying in parallel pla-nes extending lonigitudinally of the machine, one of which drives an element of each pair, means to effect rotation of said Worms including meansrfor rotating each of said Worms atfivill, or holding it against rotation, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements. y

A 55.` In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal trans- `versely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including a plurality of worms rotating on `axes lying in the saine transverse plane, one

of which drives an element of each pair, means to effect rot-ation of said Worms 1n- Vcluding means for rotating each of said lWorms at will or holding it against rotation,

and separate feed operating members each adapted tocooperate directly `With flexible feeding means and each driven and Controlled through one of said pairs ofA coaxial elements.

56. `In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including three Worms, the central Worm driving an element of each pair, means to effect rotation of said Worms including means for rotating eacli of said Worms at ivill or holding it against rotation, and separate feed operating members each adapted to cooperate directly with flexible `feeding means and each driven and controlled through one of said pairs of coaxial elements. t

57. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating `on horizontal transverselyT extending axes. `planet means `cooperating With the elements of each pair,'

means for rotating said coaxial elements including three Worms rotating on parallel axes, the central Worm driving an element of each pair, means to effect rotation of said worms including means for rotating each of said Worms at Will or holding it against rotation, and separate feed operating members each adapted to cooperate di rectly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

58. In a. mining machine, feeding `mecha` nism including a plurality of pairs of like coaxial lelements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elementsyincluding three worms rotating on horizontal axes,`the central Worm driving an element of each pair, means to effect rotation of said Worms includingmeans for rotating each of said `Worms atA Will or holding it against rotation, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements. y

59. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair,

means for rotating said coaxial elements including three Worms rotating on axes lying in parallel planes extending longitudinally of the machine, the central Worm driving an element of each pair, means to effect rotation of said Worms including means for rotating each of said Worms at will or holding it against rotation, and separate feed operating memberseach adapted to cooperate directly with fiexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

60. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements oit eachv pair, means for rotating said coaxial elements including three Worms rotating on axes llying in the same transverse plane, the central Worm driving an element oi' each pair, means to effect rotation ot said worms including means for rotating each of said Worms at Will'or holding itagainst rotation, and separate feed operating men'ibers each adapted to cooperate directly with' flexible feeding means and each driven and controlled through one of said pairs oi coaxial elements. n

61. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elementsoi each pair, and means tor rotating said coaxial elements including a plurality ot Worms one oi which drives an element oit each pair, and means for rotating each of said Worms at Will including means for rotating one of said `Worms at a plurality oit speeds and means for holding each ot said Worms stationary.

62. In a mining machine, feeding mechanism including a plurality7 of pairs oi like coaxial element-s rotating `on horizontal transversely extending axes,y planet means cooperating With the elements of eachp'air, and meansr 'for rotating .said coaxial elements including a plurality of Worms rotating on parallel axes, one of which drives an element of each pair, and means for rotating each of said Worms at Will including means `ttor rotating one of said Worms at a yplurality of speeds and meansfor holding each oi said worms stationary.

63. In a mining machine, iee'ding mechanism including a plurality of vpairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements inclu-ding a plurality of Worms rotating on horizontal axes, one of: which drives anelement oi each pair, and means for rotating each of said Worms at will including means :tor rotating one ot said Worms at a plurality ot speeds and means `for holding each oi said Worms stationary. l

64. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal vtransversely extending axes, planetmeans cooperating Witllthe elements of each pair, and means for rotating said coaxial elements including a plurality of Worms rotating on axes lying` in parallel planes extending lon-- gitudinally et the machine, one ot vwhich drives an element oi each pair, and means for rotating cach o1" said Worms ativill inelu'ding mea-ns for rotating one of said worms at a plurality of speeds and means for holding each of said Worms stationary.

65. In a mining machine, feeding mechanism including a plurality of pairs oi like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the element et each pair, and means for rotating said coaxial elements including a plurality-ot Worms rotating on axesl lying in the sametransverse plane, one of which drives an element oi each pair,

and means ior rotating each oi' said Worms at Will including means for rotating one oi' said Worms at a plurality oi speeds and means for holding each of said Worms -stationary. y

66. In a mining machine, ieeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the element of each pair, and means tor rotating said coaxial elements including three Worms, the central Worm .driving an element of each pair, and means for rotating each of said Worms at Will. including means for rotating one of 'said Worms at a plurality of speeds and means for holding each oi said Wormsstationary.

67. In a mining machine, ieeding mechalnism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating With the elements of cach pair, f

and means tor rotating said coaxial elements including three Worms rotating on parallel axes, the central Worm driving an' element of each pair, and means for rotating each of said vvorms at will including means ior rotatingone oit said Worms at a plurality ot speeds and means for holding each of said Worms stationary. i f 68. In a mining machine, feeding mechanism including a plurality et pairs oit like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating vfith the elements oit each pair, and means 'for rotating said coaxial elements including three worms rotating on horizontal axes, the central worm driving an element oi each pair, and means for rotating each of said Worms at will including means for rotating one oi said Worms at a plurality ot speeds and means for holding each of said worms stationary.

69. In a mining machine, ieeding mechanism including a plurality oi' pairs of like coaxial lelements rotating on horizontal transverselyv extending axes, planet means cooperating Withthe elements ot each pair, 1

and meansjl'or rotating said coaxial elements including three Worms rotating on axes lying inv parallel planes extending longitudinally ojt' the machine, the central Worm drivingan element ot each pair, and means for rotating each of said Worms at Will including means for rotating` one of said Worms at a plurality of speeds and means for holding each of said worms stationary.

70. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial. velements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three Worin-s rotating on axes lying inthe same transverse plane, the central worin driving an'clcment of cach pair, and means for rotating each of said Worms at will including means for rotating one of said Wormsat a plurality of speeds and means for holding each of said Worms stationary.

7l. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements includingthree Worms, the central Worm driving an element of each pair, and means for rotating each of said Worms at Will including means for rotating said central Worm at a plurality of speeds and means for holding each of said Worms stationary.

72. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotatingn on `horizontal transversely extending axes, planet means cooperating With the elements of each pair, and means for rotating said coaxial elements including three Worms rotating on parallel axes, the central Worm driving an element of each pair, and means for rotating each of said Worms at Will including meansf for rotating said cent-ral Worm at a plurality of speeds and means for holding each of said Worms stationary.

73.'In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet mean-s cooperating with the elements of each pair, and means for rotating said coaxial elements including three Worms rotating on horizontal axes, the central Worm driving an element of each pair, and means for rotating each of said Worms at will including means for rotating said central Worm at a plurality of speeds and mean-s for holding each of said Worms stationary.

74. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating With the elements of each pair, and means for rotating said coaxial elements including three Worms rotating on axes lying in paralleli planes extending' longitudinally of the machine, the central Worm driving an element ofeach pair, and: means cluding three Worms rotating on axes lying in the same transverse plane, the central Worm driving an element of each pair, and means for rotating each of said Worms at will including means for rotating'. said central Worm at a plurality of speeds and means for holding each of said Worms stationary.`

76. In a mining machine, feeding mechanism including a plurality of coaxial pairs oflike coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of cach pair, means for rotating said coaxial elements including a plurality of Worm-s one of which drives an element of each pair, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

77. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements ofeach pair, means for rotating said coaxial elements including a plurality of Worms rotating on parallel axes, one of Which drives an element of each pair, and separate feed operating members each adapted to cooperate direct-ly With flexible feeding means and each driven and controlled through one of said pairs of coaxial elements. y

78. In a mining machine, feeding -mechanism including a pluralityV of coaxial pairs of like coaxial elements rotatingon horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including a plurality of Worms rotating on horizontal axes, one of which drives an element of each pair, and separate feed operating members each adapted to cooperate directly With'iexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

79. In a mining machine, feeding mechanism includingV a plurality of coaxial pairs of like coaxial elements rotating on Vhorizontal transversely extending axes, planet means cooperating With the elements of Veach pair, means for rotating said coaxial elements including a plurality of Worms rotating on axes lying in parallel planesV extending longitudinally of the machine, one of which drives an element of each pair, and Vseparate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

80. In a mining machine, feeding mechanism including a plurality of coaxial pairs I'of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including a plurality of Worms rotating on axes lying in the same transverse plane,'one of which drives an element of each pair, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of saidv pairs of coaxial elements.

81. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including three Worms, the central Worm driving an element of each pair, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

82. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal ltransversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including three worms rotating on parallel axes, the central worm driving an element of each pair, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

S3. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like-coaxial lelements rotating on horizontal transversely extending axes, planet meanscooperating with the elements of each pair, means for rotating said coaxial elements including three worms rotating on horizontal axes, the central Worm driving an element of each pair, and separate feed operating members each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

84. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said vcoaxial elements including three Worms rotating on axes lying in parallel planes extending lonyseparate feed operating members 85. In a mining machine, feeding mechai nism yincluding a plurality ofvcoaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including three Worms rotating on axes lying in the same transverse plane, the central worm driving an element of each pair, and each adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of'coaxial elements.

86. In a miningl machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the element-s of each pair, means for rotating said coaxial elements including a plurality of worms one of which drives an'element of each pair, and means to effect rotation of said Worms including means for rotating each of said Worms at will or holding it against rotation, and-'separate feed operating members each adapted tocooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.y

87. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elementsrotating on horizontal transversely extending axes, planet means cooperating with the element-s of each pair, means for rotating said coaxial' elements including a plurality of Worms rotating on parallel axes, one'of which drives an element of each pair, means to effect rotation of said worms including means for rotating eachv of said Worms at will or holding it against rotation, and 'separate feed operatingl members each adapted` to cooperate directly 'Withr flexible feeding means and each driven .and controlled through vone of said pairs of coaxial elements.

88. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal 'transversely extending axes, planet means cooperating with the elementsof each pair, means for rotating said coaxial elements including a plurality of Worms rotating on horizontal axes, one of which drives an element of each pair, means to effect rotation of'said Worms including means for rotating each of said Worms at will' orholding it against rotation, and separate feed operating members each ladapted to' cooperate di'-l rectly with flexible feeding means and each driven and Vcontrolled through one of said Vpairs of coaxial elements.

`89.` In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating `with the elements of each pair, means for rotating said coaxial elements including a plurality of Worms rotating on axes lying in parallel planes extending longitudinally of the machine, one of which drives an element of each pair, means to effect rotation of said Worms including means Vfor rotatingieach of said Worms at will or holding it against rotation, and separate feedoperating members each adapted to cooperate directly With fiexiblefeeding means and each driven and controlled through one` of said pairs of coaxial elements. y'

90. Ina mining machine, feeding mechaof like coaxial elements rotating onhorizonital transversely extending axes, planet means cooperating with the `elements of each pair, means for rotating said coaxial elements including a plurality of Worms rotating on axes lying in the same transverse plane,one of Which drives an element of each pair, means to effect rotation of said Worms including `means for rotating each ofV said Worms at will or holding it against rotation, and separate feed operating members each f adapted to cooperate directly with flexible feeding means and each driven and controlled through one of said pairs of coaxial elements. y i i 91. In a miningmachine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizon-Y tal transversely extending axes, planet means cooperating' `vvith the elements of each pair, means forrotating said coaxial element-s including three `Worms, the centralWorm driving an element of each pair, means to effect rotation of said Worms including means for rotating each of said Worms at Will or holding it against rot-ation, and separate feed operating membersv each adapted to cooperate directly With flexible feeding means and each driven and controlled through one of said pairs of coaxial elements. g y y 92. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with theelements of each pair, means for rotating' said coaxial elements including three Worms rotating on parallel axes, the central Worm driving an element of each pair, means to effect rotation of said worms including means for rotating each of saidworms at Will or holding it against'rotation, and separate feed operating members like coaxial elements rotating on horizontal transverselyy extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including three Worms rotating on horizontal axes, the central Worm driving an element of each pair, means to effect rotation of said worms including means forrotating each of said Worms at will or holding it against rotation, and separate feed operating members each adapted to cooperate directly With flexible feeding means and each driven and controlled through one of said pairs of coaxial elements.

In a mining machine, feeding mechannism including a plurality o f coaxial pairs nism including a plurality of coaxial pairs,

in parallel planes extending longitudinallyV of the machine, the centralavorin driving an element of each pair, means to effect rotation ofsaid Worms including means for rotating y l each of said Worms at Will or holding it against rotation, and separate feed operating members each adapted to cooperate directly With flexible feeding means and each driven and controlled through one of said pairsof coaxial elements. I

95. In a mining machine, feeding mechanism including a plurality offcoaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of eaclrpaii', means for rotating said coaxial elements including three Worms rotating Von `axes lying' in the same transverse plane, the `central ivorm driving an element of each pair,VV and separate feed operating members each adag'zted to cooperate directly with flexible feeding means and each driven and controlled through one of said 4pairs of coaxial elements. y y i 9G. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including a plurality of Worms one of which drives anV element of cach pair, and means` lill) lll?) tal Lesage@ of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating Awith the elements of each pair, and means tor rotating said coaxial elen'ients including a plurality ot Worms rotating on parallel axes, one of which drives an element'ot each pair, and means for rotating each of saidworms at will including means for rotating one vof said worms at a plurality ot' speeds and means'ior holding each of said Worms stationary.

98. In amining machine, feeding mechanism including a plurality of coaxial pairs ot like coaxial elements rotating on horizontransversely.V extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including a plurality of Worms rotating on horizontal axes, one ot which drives an element of each pair, and means for rotating each ot' said Worms at Will including means for rotating one of said Worms at a plurality ot speeds and means for holding each of said Worms stationary.

99. In a mining machine, feeding mechanism including a plurality ot coaxial pairs of like coaxial elements rotating on hori- Il f u t) Zonta] 'transversely extending axes, planet means cooperating with the elements ot each pair, and means for rotating said Coaxial element-s including a plurality ot Worms rotating on axes lying in parallel planes extending longitudinally ot the machine, one lof which drives an element ot each pair, and means tor rotating each of said Worms at will includingl means for rotating one of said Worms at a plurality of speeds and means for holding` each of said Worms stationary.

100. In a mining machine, feedingmechanism including va plurality ot coaxial pairs ot like coaxial elements rotating on horizontal transversely extending axes, planet meanscooperating with the elements of each pair, andimeans for rotating said coaxial elements including a plurality of worms rotating on axes lying .in the same transyerse plane, one 'of which drives an element ot each pair, and means for rotating each of said worms at will including'means tor rotatingone of said Worms at a plurality of speeds and means for holding each ot saidnforins stationary.

101. Ina mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on hori- Zonta-l transversely extending axes, planet means cooperatingl With the elements oi `each pair, and means for rotating said coaxial eleinents including three Worms, the central Worm driving an element of each pair, and means for rotating each of said Worms at will Vincluding rmeans for rotating one of said Worms .at a plurality of speeds and means `for holding` each of said Worms stationary. 102. Inamining machine, feeding mechanism including'a plurality of coaxial pairs ot like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating onv anv parallel axes,-t`he central Worm driving y element oi each pair, and means for rotating each of said Worms at will including means for rrotating one of said Worms ata plurality ot spcedsand means tor holding each of said Worms stationary. l

1.03, In a mining machine, feeding mecha nism including a plurality of coaxial pairs of like coaxial elements rotating onhori- Zontal `transversely extending axes, planet means cooperating With the elements of each pair, and means tor rotating said coaxial elements including three Worms rotating on y horizontal axes, the central Worm driving an element of each pair, and means .forfro tating each of `said WormsV at will including means for rotating one of said Worms at a` means for rotating each of said Worms at will including means Ifor rotating one of said Worms at a plurality of speeds and means 'for holding each ot said Worms stationary.

105. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet mea-nscooperating With the element of each pair, and means for rotating said coaxial elements including three Worms rotating on axes lying -in the saine transverse plane, the central Worm driving anelement of each pair, and means Afor rotating each ot sai-d Worms atwill including means Vtor rotating one of saidworms ata plurality o't speeds and means tor-[holding each of said Worms stationary. I f

106. In a mining machine, 'feeding mechanism including a plurality ot coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the element of each pair, and means for rotating 'said `coaxial elements including three Worms,lthe central Worm driving an element of each pair, and

lllt) ilu means for rotating each of said Worms at will including means for rotating said cen` tral Worm at a plurality of speeds and means for holding each of said Worms stationary.

V107. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on'horizent-al transversely extending axes, planet means cooperating with the elements ofeach pair, and means for rotating said coaxial elements including threevvorms rotating on parallel axes, the central Worm driving an clement of each pair, and means for rotating each of said Worms at Will including means for rotating said central Worm at a plurality of speeds and means for holding each of said. Worms stationary.

108. In a ii.ii11iiigniaclii1ie, feeding mech anism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including. three Worms rotating on 'V horizontal axes, the central vvorm driving an element of each pair, and means for rotating each of said Worms at Will including means for rotating said central Worm at a plurality of speeds and means for holding each of said Worms stationary. y

109. In a mining machine, feeding mechanism including aplurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperatingl With the elements of each pair, and means for rotatingsaid coaxial elements including three `Worms rotating on axes lying in parallel planes extending longitudinally of the machine, the central Worm driving an element of each pair, and means for rotating each of said Worms at will including means for rotating said central Worm at a plurality of speeds and means for holding each of said Worms stationary.

110, In a mining machine, feeding mechanism including a pluralityof coaxial pairs of like coaxial elements rotating `on horizent-al transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three Worms rotating on axes lying in the same transverse plane, the central Worm driving an element of each pair, and means for rotating each of said Worms at Will including means for rotating saidcentral Worm at a plurality of speeds and means for holding each of said Worms stationary. Y

111. In a mining machine, feeding mechanism including a plurality of feed operating and controlling Winding members, a

. plurality of pairs of like coaxial elements coaxial with said feed operating members y and rotating on horizontal transversely extending axes, planet means cooperating With the elements of each pair, and means for rotating said coaxial elements including'a plurality of Worms one of which drives an element of each pair.

112. In a mining machine, feeding mechanismincluding a plurality of feed operating and controlling Winding members, a plurality of pairs of like coaxial elements coaxial With said' feed operating members and rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including a plurality of Worms rotating on parallel axes, one of which drives an element of each pair.

1.13. In a mining machine, feeding mechanism including a plurality of fcedoperating and controlling Winding members, a plurality'of pairs of like coaxial elements coaxial with said feed operating members and rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including a plurality of Worms rotating on horizontal axes, one of Which drives an element of each pair. Y

114. In a mining machine, feeding mechanisin including a plurality of feed operating and controlling Winding members, a pl1`- rality of pairs of like coaxial elements coaxial with said feed operating members and rota-tingen horizontal transversely extendw ing axes, planet means cooperating With the elements of each pair, and means for rotating said coaxial elements including a plurality of Worms rotating on axes lying in parallel planes extending longitudinally of the machine, one of which drives an element of each pair. Y

115. In a mining machine, feeding mechanism including a. plurality of feed operating and controlling Winding members, a plurality of pairs `of like coaxial elements coaxial with said feed operating members and rotating on horizontal transversely extending axes, planet means cooperating'vvith the elements of each pair, and means for, rotating said coaxial elements including a plurality of Worms rotating on axes lying in'V the same transverse plane, one of which drives an element of each pair.

116. In a mining machine, feeding mechanism including a plurality of feed operating and controlling Winding'members, a plurality of pairs of like coaxial elements coaxial With said feed operating members and rotating on horizontal transversely extend-V ing axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three Worms, the central Worm driving an element of each pair.

117. In amining machine,l feeding mechanism including a plurality of `feed operating and Controlling winding members, a plurality of p'airs of4 like coaxial elementscoaxial Withsaid feed operating members and rotating yon horizontal traversely extending axes, planet means cooperating with the yelements of each pair, and means for rotating ksaid coaxial elements including threeavorms rotating von parallel axes, the central worm driving an element of each pair.

118. In a mining machine, feeding mechanism including a plurality of feed operating and controlling winding members, a, plural- `ity of pairs of likecoaxial elements coaxial with said feed operating members and rotat-v axes, planet means cooperating with the elev ments of each pair, and means for rotating said coaxial elements including three Worms rotating on axes `lying in parallelplanes extending longtiudinally of the machine, the

\ central worm driving-an element of each air.' p 120. In a mining machine, feeding mechan'ism including a plurality of feed operating and controlling Winding members, a plurality of pairs of like coaxial elementscoaxial with said kfeed operating members and rotating o`n nhorizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three Worms rotating on axes lying in the same transverse plane, the central Worm driving an element of each pair.

121. In' a mining machine, feeding mechanism including a plurality of feed opera-ting and controlling Winding members, a plurality o'f pairs of like coaxialV elements coaxial with said feed operating members and ro-` tating onhorizontal transversely extending axes, planet Vmeans cooperating with the elements of each pair, and means for rotating said coaxial elements including a plurality of worms one vof which ydrives ali-.element of eachV pair,- and means to effectrotation of said Worms includingmeans for rotating each of said Worms 'at/ Will or holding kit against rotation,

122.V In a mining machine, feeding mechanism including a plurality of feed operating and controlling Winding members, a plural-- itj7- of pairs" o f like coaxial'e'lenents coaxial 'withsadffeefl.Operating members and retains ,0.11 h'rizontal ti'aiisvfisly e'ftehlg axes Plfntians co'relatris' wthtll ments of each pair, and means forvrtating saidcoaxial elements including, a'plui'ality of Worms rotating on parallel axes, yone of which drives an element f each pair, and means vjtoMeil'ecty rotation of said, Worms in- :cluding means for` rotating each vofs'aid worms at Will orholding it against rotation.

123. Iny a miningl inachine feeding nicliaiiisnr'iiicluding a plurality of feed operating and controlling Windingniembzersfa plurality paii'sfof likecoaxial elements'coaxial With said, feed operating members Vand rotating` on `horizontal transversely extendiiigV axes', planet meansv cooperating withthe elements of each pair, `and means vfor rotating said coaxial elementsincluding a plurality ofv Worms rotating on horizontal axes", one ofwhich drives an element of each pair, and means ltoleflfect rotation of said Worms iiicluding means for rotating each of; said Worms at Wilkor holdingit-agains't rotation. 124. In ay mining machinefeedi1ig mecha-v nism including @plurality O f feea Operating and controllingjvinding members, ya plural-` ity of vpairs of like `'coaxial elements coaxial wiwfsaid i' ed operating ,members ,and tating on horizontal transversely Iext-'ending axes, Vplanet means cooperating with the ,ele-

ments of each pair, means for rotating said coaxial elements including a lplurality of Wormsmrotatiiigpn axes, lying in parallel planes extending longitudinally the machine,x one of Which tlrivesnn element of each pair, and means to effect` rotation of said Worms, including means for rotating each o f said Worms at Will or holding it againstrotation. n l .Y

125. y In av mining machine,l feeding meclianism including aplurality of feed operating and controlling winding members, aplurality of pairs of like coaxial elements coaxialvvith Said feed operating members and rotating on horizontal transverselyextend ing axes, planet means cooperating with the elements of each pair, andmeans for rrotatting said coaxial elements including a plurality of Worms rotatingon axes lying in the same transverse plane, one `of which drives an element of each pair, and meansto effect rotation Tof Worms including means for rotating each of sai'd'nforins at willor holding against rotation. l

126. In a, mining machine, feeding mechanism including a plurality olf feedopr'ating andx controlling winding members, a, plurality ofpairs oflikewcoaxial elements v coaxial `ivith ,said feed4 yoperating members, and rotating on horizontal transversely', extending. axes', Planet means @Genemans alt-h the elements of each pair, and means forrotat- Sect coaxial elements;ineludngttliree warms,

pair, and means to efect rotation of said Worms including means for rotating each of said Worms at Will or holding it' against rotation. y f

127. In a mining niachine,`feeding mechanism including a plurality of feed operating and controlling Winding members, a plurality of pairs of like lcoaxial elements coaxial with said Vleedoperating members and rotating on horizontal transversely extendingaxes, planet means cooperating With the elements of each pair, and means for rotating said coaxial `elements including three Worms rotating on paiallel axes, the central Worm driving an element of each pair, land means to effect rotation of said Worms including means for rotating each of said i Worms at will or holdingit against rotation.

128. In a'mining machine, feeding mechanismincluding a plurality of feed operating" and controlling Winding members, a plurality of pairs of likecoaxialelements coaxial with said "feed operating members and rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pail-,and Vmeans for rotating said coaxial elements including three Worms rotatingon horizontal axes, the

central Worm driving an element of each pair, and means to `effect rotation of said Worms including means for rotating each of said Worms at Will or holding it against rotation.

129. In a mining machine, feeding mechanism including a plurality of feed operaty ing and controlling 'Winding members, a plurality of pairs of like coaxial elements coaxial vvith Vsaid feed" operating `members and rotating on horizontaltransversely extending axes, planet means cooperating with the elements of each pair, and means for ro` tatingsaid coaxial elements including three Worms' rotating on axes lying in parallel planes extending longitudinally of the niachine, the central Worm driving an element of each pair, andmealns'to eilect `rotation of said Woriiisincluding means for rotating each of said .worms at will or holding it against rotation.

130. In a mining machine, feeding mechanism including a plurality of `feed operating and controlling Winding members, a

plurality cf pairs of like coaxial elements coaxial with said feed operating members and rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three Worms rotating on axes lying inthe same transverse plane, the central WorinV `driving an element of each pair.

181. In a mining machine, feeding meclianism inclu-ding a pluralitydof feed operat-` ing and controlling members, a plurality of pairs of like coaxial elements;Y coaxial with said feed operating members and rotating Aon horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial.

elements including a plurality of Worms one of which drives an element offeachfpair,`

and means for rotating each of said worms at Will including means for rotating one of said Worms at a plurality of speeds and means for holding each of said Worms stationary.

132. In a mining machine, feeding mecha i nism including a'plurality of `feed operating and controlling members, a yplurality Lof pairs of like coaxial `elements coaxialV with said feed operating members and rotating on horizontal transversely extending axes, planet means cooperating with the elements of each-pair, and means for rotating said coaxial elements including apluralityiof Worms rotating on parallel axes, oneiol' i whichV drives an element of each pair, and means for rotating each of said Worms at will including'means for rotating one of said wvorms at a plurality'of speeds and meansv for holding each of saidWormsistationary.

133. In a mining machine, feeding mechanism including aplurality of feedioperating` and controlling members, a plurality of pairs of like coaxial elements coaxial with said feed operatingmembers and rotating on hor-V izontal transversely extendingl axes, planet means cooperating with the elements oteach pa-ir, `and means for rotatingisaid coaxial elements including a plurality of Worms ro tatiiig on horizontal axes, one of which lUt) drives an element of each pair, and meansV tating on horizontal transversely extending Y axes, planet means cooperating with the t elementsof each pair, and means, forrotating said coaxial elements including a plu-f rality' of Worms rotatingv on-axes lying in parallel planes extending longitudinally of the machine, one of which drives :in/ele- `ment of each Apair, and ineansfor .ro

tating each of said Worms at will including means for rotating `one of said Worms at a plurality of speeds and meansy for holding .each of said- Worms stationary.r

`135. In a mining machine,ifeeding mechanism including a plurality ofrfeed operating and controlling members, a'plurality of pairs ofv like coaxial elements coaxial with said feed operating `members'and rotating on horizontal transversely extending axes, planet means cooperating with the ele# 

